Published January 2000 | Version v1
Report Metadata-only

Measurement of the diffractive cross section in low Q2 ep scattering at HERA

Creators

  • 1. Tokyo Univ., Tokyo (Japan)

Description

The cross section of the diffractive process, γ* + p → X + N, has been measured in the mass range, 3 < MX < 12.2 GeV and MN < 6 GeV, for the low Q2 region, 0.220 < Q2 < 0.700 GeV2, and the γ*p center-of-mass energy, 90 < W < 220 GeV using the ZEUS detector. The Pomeron trajectory, αIP(t) at t=0, is obtained from the W dependence of the cross section, dσγ*pdiff / dMX, using the Regge formalism. The extracted value, αIP(0)=1.217 ± 0.026(stat) -0.088+0.042(syst), is significantly higher than that expected from soft Pomeron. (author)

Availability note (English)

Available from KEK(High Energy Accelerator Research Organization). Also available from the internet at URL http://www.kek.jp

Additional details

Identifiers

URL
http://www.kek.jp;

Publishing Information

Imprint Pagination
132 p.
Report number
KEK--99-9

INIS

Country of Publication
Japan
Country of Input or Organization
Japan
INIS RN
33023554
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Non-conventional Literature, Numerical Data
Descriptors DEI
COLLIDING BEAMS; CROSS SECTIONS; ELASTIC SCATTERING; ELECTRON BEAMS; EXPERIMENTAL DATA; GEV RANGE 10-100; GEV RANGE 100-1000; HERA STORAGE RING; MONTE CARLO METHOD; PARTON MODEL; POMERANCHUK PARTICLES; PROTON BEAMS; REGGE CALCULUS; SHOWER COUNTERS; TAGGED PHOTON METHOD; VIRTUAL PARTICLES; X-RAY DIFFRACTION
Descriptors DEC
BEAMS; BOSONS; CALCULATION METHODS; COHERENT SCATTERING; COINCIDENCE METHODS; COMPOSITE MODELS; COUNTING TECHNIQUES; DATA; DIFFRACTION; ELEMENTARY PARTICLES; ENERGY RANGE; GEV RANGE; HADRONS; INFORMATION; LEPTON BEAMS; MATHEMATICAL MODELS; MEASURING INSTRUMENTS; MESONS; NUCLEON BEAMS; NUMERICAL DATA; PARTICLE BEAMS; PARTICLE MODELS; POSTULATED PARTICLES; RADIATION DETECTORS; SCATTERING; STORAGE RINGS

Optional Information

Notes
83 refs., 61 figs., 10 tabs.